👋 About Me

Back-end Developer focused on DevOps, Observability, and Automation.
I enjoy turning “ops pain” into reliable, observable, automated systems.

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🚀 Highlights

• ~57% faster GitHub integration response time via Redis token caching
• Built an incident-response automation flow: Automation 100% / Success 80% / MTTR -43%
• Operate self-hosted infrastructure with CI/CD, monitoring, and backup practices

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🧩 Projects

Colio (Feb 2025 – Present) · Backend

Experience-based portfolio editor & hiring connection platform.

• GitHub API features + Redis caching to reduce latency (~57%)
• Search with MongoDB + Atlas Search
• CI/CD with Docker Compose + GitHub Actions
• Integrations: AWS S3 / SES, Solapi (Alimtalk)

HUFS CES Capstone (Sep 2025 – Dec 2025) · Infra / Backend / Frontend

AI Assistant flow for incident mitigation in a cloud-infra environment.

• K3s cluster on 3 Raspberry Pi nodes
• Tailscale VPN for remote access & inter-system connectivity
• Observability stack: Prometheus / Loki / Alertmanager
• Automation: n8n + Ollama (llama3) with verification/feedback loop
• Result: Automation 100% / Success 80% / MTTR -43%

NkeysWorld (Jan 2026 – Present) · Personal Infrastructure

Self-hosted code management + study + monitoring platform.

• Oracle Cloud (OCI) + Docker / Compose
• Gitea + Gitea Runner CI/CD 운영
• Nginx + Certbot, FastAPI + n8n workflows
• Operates a Discord bot that delivers coding-test problems on schedule

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💼 Experience

Leadership

LIKELION HUFS Global 12th (Mar 2024 – Dec 2024) · Representative

• Led the 12th cohort as the representative of LIKELION HUFS Global
• Coordinated communication, community activities, and overall cohort operations
• Supported team collaboration and program participation throughout the term

Ganziton: Python (10-University Joint Hackathon) (May 2024 – Nov 2024) · PR Team Leader

• Led PR and event operations for a 10-university joint hackathon
• Designed the hackathon concept and promotional direction
• Managed merchandise production, venue coordination, and judge outreach
• Produced Instagram promotional content and sponsor proposal decks

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Teaching & Mentoring

Coding Education Volunteer at Pungsaeng High School (Mar 2024 – Dec 2024) · Instructor

• Taught Django-based programming classes for students
• Mentored students in developing a school bazaar-related web service as a hands-on team project
• Supported learners in planning and implementing simple practical software projects

Computer Programming, Division of Semiconductor and Electronic Engineering (Mar 2024 – Jun 2024) · Teaching Assistant

• Assisted with course operation for Computer Programming classes
• Supported students with programming practice and problem solving
• Helped facilitate learning activities during the semester

Coding Zone (Sep 2024 – Dec 2024) · Teaching Assistant

• Supported coding practice sessions as a teaching assistant
• Helped learners understand programming concepts and complete exercises

Coding Zone (Sep 2025 – Dec 2025) · Teaching Assistant

• Continued supporting coding practice sessions as a teaching assistant
• Assisted students with programming exercises and learning guidance

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Activities & Hackathons

LIKELION HUFS Global 11th (Mar 2023 – Dec 2023) · Member

• Participated as a member of LIKELION HUFS Global 11th
• Engaged in programming study, team activities, and community events

Smilegate Creative Ideathon (Jul 2023) · Participant

• Participated in the Smilegate creative mentoring ideathon
• Worked on idea development and presentation activities

LIKELION HUFS Global 11th Central Hackathon (Aug 2023) · Participant

• Participated in the central hackathon as a member of LIKELION HUFS Global 11th
• Collaborated on service ideation and development under time constraints

Ganziton: Mirthon (9-University Joint Hackathon) (Nov 2023) · Participant

• Participated in a joint inter-university hackathon
• Collaborated with teammates on ideation and hackathon execution

HUFSummer Hackathon (Jun 2024) · Participant

• Participated in the 2024 HUFSummer Hackathon
• Collaborated on idea development and hackathon project execution

LIKELION HUFS Global 12th Central Hackathon (Aug 2024) · Participant

• Participated in the central hackathon as a member of LIKELION HUFS Global 12th
• Worked collaboratively on service planning and development under time constraints

⚙️ Tech Stack (Unified Badges)

Languages

Backend / Frameworks

Frontend

Database / Cache / Search

Infra / DevOps

Observability (Monitoring / Logging)

Automation / Workflow / Collaboration

Cloud / Networking / Ops

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🏆 Awards & Activities

• Leader of LIKELION Global 12th cohort
• Top Award (1st place) · 2023 Inter-university Hackathon (10 universities)
• Linux Master Level 1

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🔗 Links

• Portfolio (Gitea): https://nkeystudy.site/gitea/
• LIKELION Archive: https://velog.io/@hufsglobal09/series/HUFSLION12th-Archive